Unvented Central Heating System Diagram

The electric versions use a coiled heating element to heat the water rapidly in a.

Unvented central heating system diagram.

Modern heating systems run by gas boilers tend to be unvented or pressurised. In an unvented system there is no header tank and the water in the pipes is under pressure. For an entirely new installation s plan would be a far better choice as that does not have the default open problem and also allows the use of multiple zones for the central heating. For more advice call our technical team or request a site visit to review your current heating system.

S plan heating systems are now the most common type of system installed in the uk after combination boiler systems which do not have any external motorised valves. Instantaneous hot water heating systems this method involves using gas or electricity to heat the water to a useable temperature without the need to store the water. A guide to the different ways of heating domestic hot water so you can identify problems and faults with the hot water tank or central heating system and carry out any maintenance needed. The diagram below shows the general layout of an unvented hot water system.

One givaway is that there is often a pressure gauge on the boiler measured in bar. Hamworthy s upton condensing boilers and stratton mk2 wall hung boilers are suitable for installation in sealed heating systems only. A guide to the most common types of domestic heating and hot water systems with diagrams including indirect boiler system unvented system thermal store. However our purewell variheat cast iron condensing boiler can be installed in an open heating system.